how to system prune a specific image code example
Example 1: docker remove all images
docker rmi $(docker images -a -q)
Example 2: docker delete images without tag
docker rmi $(docker images -a|grep "<none>"|awk '$1=="<none>" {print $3}')
docker rmi $(docker images -a -q)
docker rmi $(docker images -a|grep "<none>"|awk '$1=="<none>" {print $3}')